/**
 * @desc
 * 将生成好的CSV文件上传到ga.
 * @使用场景
 *
 * @author  杨晓东[of1081]
 * @company qianmi.com
 * @Date    2017/2/3
 **/
'use strict';


var fs = require('fs');
var readline = require('readline');
var google = require('googleapis');
var googleAuth = require('google-auth-library');

// If modifying these scopes, delete your previously saved credentials
// at ~/.credentials/gmail-nodejs-quickstart.json
var SCOPES = [
   'https://www.googleapis.com/auth/gmail.readonly',
   
   'https://www.googleapis.com/auth/analytics',
   'https://www.googleapis.com/auth/analytics.edit',
   
   'https://www.googleapis.com/auth/analytics.manage.users',
   'https://www.googleapis.com/auth/analytics.manage.users.readonly',
   'https://www.googleapis.com/auth/analytics.provision',
   'https://www.googleapis.com/auth/analytics.readonly'
   ];
// var TOKEN_DIR = (process.env.HOME || process.env.HOMEPATH ||
// process.env.USERPROFILE) + '/.credentials/';


var TOKEN_DIR = './.credentials/';
var TOKEN_PATH = TOKEN_DIR + 'gmail-nodejs-quickstart.json';

// Load client secrets from a local file.
fs.readFile('client_secret.json', function processClientSecrets(err, content) {
  if (err) {
    console.log('Error loading client secret file: ' + err);
    return;
  }
  // Authorize a client with the loaded credentials, then call the
  // Gmail API.
  authorize(JSON.parse(content), afterAuth);
});

/**
 * Create an OAuth2 client with the given credentials, and then execute the
 * given callback function.
 *
 * @param {Object} credentials The authorization client credentials.
 * @param {function} callback The callback to call with the authorized client.
 */
function authorize(credentials, callback) {
  var clientSecret = credentials.installed.client_secret;
  var clientId = credentials.installed.client_id;
  var redirectUrl = credentials.installed.redirect_uris[0];
  var auth = new googleAuth();
  var oauth2Client = new auth.OAuth2(clientId, clientSecret, redirectUrl);
  
  // Check if we have previously stored a token.
  fs.readFile(TOKEN_PATH, function(err, token) {
    if (err) {
      getNewToken(oauth2Client, callback);
    } else {
      oauth2Client.credentials = JSON.parse(token);
      callback(oauth2Client);
    }
  });
}

/**
 * Get and store new token after prompting for user authorization, and then
 * execute the given callback with the authorized OAuth2 client.
 *
 * @param {google.auth.OAuth2} oauth2Client The OAuth2 client to get token for.
 * @param {getEventsCallback} callback The callback to call with the authorized
 *     client.
 */
function getNewToken(oauth2Client, callback) {
  var authUrl = oauth2Client.generateAuthUrl({
    access_type: 'offline',
    scope: SCOPES
  });
  console.log('Authorize this app by visiting this url: ', authUrl);
  var rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout
  });
  rl.question('Enter the code from that page here: ', function(code) {
    rl.close();
    oauth2Client.getToken(code, function(err, token) {
      if (err) {
        console.log('Error while trying to retrieve access token', err);
        return;
      }
      oauth2Client.credentials = token;
      storeToken(token);
      callback(oauth2Client);
    });
  });
}

/**
 * Store token to disk be used in later program executions.
 *
 * @param {Object} token The token to store to disk.
 */
function storeToken(token) {
  try {
    fs.mkdirSync(TOKEN_DIR);
  } catch (err) {
    if (err.code != 'EEXIST') {
      throw err;
    }
  }
  fs.writeFile(TOKEN_PATH, JSON.stringify(token));
  console.log('Token stored to ' + TOKEN_PATH);
}


/**
 * 认证完成后的事情 ..
 * @param auth
 */
function afterAuth(auth){
  // listLabels(auth);
  // listAccounts(auth);
  // listCustomDataSources(auth);
  updateCustomDataSources(auth);
}

function queryReportData(auth){
  
}


var config  =  require('./config/config');


/**
 * 上传用户数据内容
 * @param auth
 */
function updateCustomDataSources(auth){
  
  let accountId  =config.gaConfig.accountId;
  
  config.gaConfig.webPropertys.forEach(webPropertyItem => {
  
    fs.readFile('./output/all-' + webPropertyItem.name + '.csv',(err,data)=>{
      var analytics = google.analytics('v3');
      analytics.management.uploads.uploadData({
        auth: auth,
        accountId,
        webPropertyId:webPropertyItem.webPropertyId,
        customDataSourceId:webPropertyItem.customDataSourceId,
        media:{
          body:data.toString(),
          mimeType:"application/octet-stream"
        }
      },(err, response)=>{
        console.log(err,response)
      })
    })
    
  });
  
}


/**
 * 列出数据源
 * @param auth
 */
function listCustomDataSources(auth){
  
  var analytics = google.analytics('v3');
  analytics.management.customDataSources.list({
    auth: auth,
    accountId:"62751334",
    webPropertyId:"UA-62751334-6"
  },(err, response)=>{
    if (err) {
      console.log('The API returned an error: ' + err);
      return;
    }
    console.log(response);
  });
  
}


/**
 * 列出帐户信息..
 * @param auth
 */
function listAccounts(auth){
  var analytics = google.analytics('v3');
  analytics.management.accounts.list({
    auth: auth,
  },(err, response)=>{
    if (err) {
      console.log('The API returned an error: ' + err);
      return;
    }
    console.log(response);
  });
}


/**
 * Lists the labels in the user's account.
 *
 * @param {google.auth.OAuth2} auth An authorized OAuth2 client.
 */
function listLabels(auth) {
  
  var gmail = google.gmail('v1');
  gmail.users.labels.list({
    auth: auth,
    userId: 'me',
  }, function(err, response) {
    if (err) {
      console.log('The API returned an error: ' + err);
      return;
    }
    var labels = response.labels;
    if (labels.length == 0) {
      console.log('No labels found.');
    } else {
      console.log('Labels:');
      for (var i = 0; i < labels.length; i++) {
        var label = labels[i];
        console.log('- %s', label.name);
      }
    }
  });
}